TITLE:
Analysis Neotectonic Activities in Khafr Basin
AUTHORS:
Ahmad Ansari Lari, Maryam Ansari, Soraya Ansari
KEYWORDS:
Neotectonic, Geomorphic Indicators, Drainage Density Index, Basin of Khafr
JOURNAL NAME:
Open Journal of Geology,
Vol.6 No.6,
June
28,
2016
ABSTRACT: As Iran is located on one of the two
earthquake-prone belts in the world, and existence of faults and earthquakes is
normal in Iran tableland. The main reason of earthquake is Neotectonic
movements which can be effective in other natural disasters such as range
movements. Due to the severe shortage of historical and seismic data and device
in different parts of the world, particularly Iran, need for introducing more
researchers and planners of Iran to tectonics and active tectonic areas is more
visible. This study is an investigation of Neotectonic activities in Khafr
basin area, Fars province. To achieve the aims of this study morphometric
parameters were used. Investigations showed that severity and role of tectonic
activities in different parts of the basin isdifferent, results of geomorphic and tectonic assessments
indicate these differences.Stream length-gradient index (SL)on the main stream is inactive and sub streams are semi active, the ratio of the basin (BS)is 2.27, drainage basin asymmetry index (AF)is in semi active class, the ratio of width to depth
of Valley (VF)shows 0.78. Indicators mentioned are in class 3 based on Iat
classification,that represents tectonic
activity in the area is average. Other indicators are indicative of active
tectonic in the basin such as drainage density index (D) with high
density, river sinuosity (S) 1.25, reverse topography symmetry Factor (T)
0.3.Generally it can be
considered as moderately active region in terms of tectonic activities.